Medido el 2026-07-11 · DNS público
¿Está mtb.com protegido contra la suplantación de correo?
Sí — mtb.com aplica DMARC (p=reject).
Postura sin cambios desde el 2026-06-19
Más protegido que el 22 % de bancos en Estados Unidos
El 80 % del sector ya aplica p=reject
A
DMARC
p=reject
SPF
~all
DKIM
ninguno encontrado
BIMI + marca verificada (VMC) — tu logo, autenticado
Cómo corregirlo
Thomas, tu CISO virtual con IA, identifica cada fuente, escribe el DNS exacto y lleva tu dominio de p=none a p=reject con total seguridad.
Registro publicado
v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;Qué significa esto
- • Politique p=reject : protection maximale contre l’usurpation.
- • SPF se termine par ~all (softfail) : acceptable en phase d’observation, viser -all à terme.
- • Aucune clé DKIM trouvée sur les sélecteurs courants (le domaine peut utiliser des sélecteurs non standards).
Historial
- 2026-06-26Primera mediciónProtegido (p=reject)
Sobre M&T Bank
M&T Bank is a major financial institution operating in France, with its email domain mtb.com serving as a critical communication channel for customers, partners, and employees. As a banking organization, M&T Bank transmits official correspondence, account notifications, security alerts, and contractual documents through this trusted domain daily. Securing mtb.com through robust email authentication is essential to prevent brand impersonation and phishing attacks targeting its customer base. Criminals routinely exploit poorly secured banking domains to impersonate financial institutions, undermining customer trust and exposing organizations to significant legal liability. DMARC, combined with SPF and DKIM, provides an authentication mechanism enabling recipient mail servers to validate the legitimacy of messages sent from mtb.com. For a French financial entity, this implementation aligns with increasingly stringent regulatory requirements, particularly under the NIS2 Directive, which strengthens cybersecurity obligations for essential service operators. An appropriate DMARC policy on mtb.com substantially mitigates email fraud risks, protects brand reputation, and ensures only authorized M&T Bank servers can transmit from this domain. The DMARC Observatory documents the security posture of the mtb.com domain, providing stakeholders with visibility into the email authentication practices implemented by this French financial institution.